As an environmental scientist, mike wants to address the issue of climate change. studying which aspect will mike address the issue?

In the given case, Mike needs to study the emission of greenhouse gases.

Explanation:

A gas, which captivates and discharges radiant energy within the thermal infrared range is considered as a greenhouse gas. The greenhouse gases result in a greenhouse effect. The main greenhouse gases in the atmosphere of the Earth are carbon dioxide, water vapor, ozone, methane, and nitrous oxide.  

The greenhouse gases envelopes the Earth like a blanket. With more burning of fossil fuels like natural gas, coal, and oil, the blanket turns denser, thicker, and permits less escaping of heat. The trapping of heat takes place within the blanket of greenhouse gases and the Earth turns too much warm eventually resulting in a change in climate.  

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.

fumikage isn't really a bird, and tsuyu does have teeth. tsuyu has a transformation quirk which still allows her to be partially human. otherwise we'd have a large frog running around. fumikage has teeth because again, he isn't a bird. his head was a quirk mixture if i'm correct.